Live data from Hacker News

NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

blogs.nasa.gov

291–300 of 330 posts

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#291
post #289

I wonder if a "modern" probe from 2024 could ever have a similar lifespan. With systems hundred times more complex and build by a NASA that is a fraction of what it was 50 years ago, i guess a modern day Voyager will not even make it to the edge, let alone continue to function.

We'll have a chance to see with New Horizons. It's one of the five craft to ever be put on a solar escape trajectory.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#292

Earlier quoted context omitted.

The Google Pixel 8 series receives 7 years of updates. And unlike Apple they are upfront about it, which is important. Maybe your iPhone gets 8 years of updates, maybe 6 noone knows.

I'm not sure why anyone would take Google seriously when it comes to sticking to their word, but Google is merely promising to deliver in the future what Apple has already been doing in the past, since that iPhone SE is already in it's eighth year of support. Remember Google promising to never link your advertising profile with the other data they had about you when they bought DoubleClick?

Google certainly delivered on 8 (now even 10) years of updates for Chromebooks.

And advertising n years of updates is legally binding in a way. Apple can stop updating tomorrow if they feel like it. Google can't.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#293

Yep, 45 years old hardware, still getting software updates. Hey Apple, JPL is close to you, can you get someone to bike over and see how they do it? Thanks!

Planned obsolescence [1] in the problem. Apple could certainly create modular devices designed to be used and piecemeal modified/updated indefinitely. But it's way more profitable to sell you a brand new phone every couple of years than it is to sell you a modular device that you could update as desired, especially if the parts/connections are standardized meaning you could foster a [normalized] third party market fo…

Modular devices aren't free in terms of engineering tradeoffs. Those interconnects to support modularity add their own unreliability (connectors that can fail more easily), weight (connectors) & increased size. Additionally, the connectors themselves have obsolescence anyway & at some point really expensive components start to be bottlenecks (e.g. upgrading the display uses a new connector or requires processing power/bandwidth that the CPU/RAM/GPU don't have etc). You see this in desktops where modularity is still fairly limited in terms of extending the lifespan of your machine - most people will buy a new computer anyway after 5 years vs trying to upgrade some components piecemeal because the new computer is cheaper / unit of performance than doing piecemeal upgrades.

According to https://en.wikipedia.org/wiki/Modular_smartphone, the modularity of the FairPhone helps it live 5-7 years. Notably that's not different from the 6-8 years that an iPhone is supported for.

It's easy to blame it as planned obsolescence on the part of a single party instead of viewing it as a consequence of natural marketplace dynamics. You may of course adjust those dynamics by having the government impose a different set of constraints to have a different outcome. Politically that can be difficult though, especially in America, & it's not primarily because of the GDP but because people here generally distrust the government.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#294

Earlier quoted context omitted.

I'm not sure why anyone would take Google seriously when it comes to sticking to their word, but Google is merely promising to deliver in the future what Apple has already been doing in the past, since that iPhone SE is already in it's eighth year of support. Remember Google promising to never link your advertising profile with the other data they had about you when they bought DoubleClick?

Google certainly delivered on 8 (now even 10) years of updates for Chromebooks. And advertising n years of updates is legally binding in a way. Apple can stop updating tomorrow if they feel like it. Google can't.

Google literally testified before Congress that they wouldn't link their user data with advertising profiles when they bought DoubleClick. That didn't stop them from doing it anyway.

I think the fact that Apple started delivering long term support over a decade ago is much more compelling.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#296

How many Starships would it take to go and bring Voyager 1 back to earth? If each ship was used like an expendable stage, and we were willing to use 100 ships, how long would it take to catch up to Voyager, stop, and return to earth?

How many ships could the ships ship if the ships could ship probes?

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#297

Earlier quoted context omitted.

It's probably a lot easier in a way, because they don't have to worry about external dependencies changing at all. Modern code is a real PITA that way. What's hard about their work is 1) it's really, really slow to communicate with, so you can't iterate quickly, 2) the tech is really old and unlike today's stuff, so it's very specialized domain knowledge.

Also whatever you do don't break the receiver pathway! Otherwise you will need to send a technician on-site.

The lead engineer from the 70's is actually in Voyager 1's fuselage. It's cramped but they seem to be doing ok! They're just taking pictures with an old Canon point and shoot.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#298
post #217

Dark Forest Hypothesis: https://en.wikipedia.org/wiki/Dark_forest_hypothesis

Although that’s one of the many possible explanations of the Fermi paradox [0], I prefer to think that the real reason we haven’t discovered (or we haven’t been discovered) is the fact that we’re limited by the speed of light. The distances are so vast, almost unfathomable, that we need Faster Than Light means of traveling. Perhaps I’m being naive or romantic, but I prefer to think this is the real reason :-) [0] htt…

Entropy is probably why.

Also as particles spread out, there's less of a chance of interaction, which by extension makes it so there's less of a chance that a system of electrical impulse that fires in a synapse would exist over large distances. This system, of course, would be the catalyst for producing such thoughts as "I wonder if we're alone in the universe."

That's not to say you can't send dense information over larger distances with a shorter wavelength (re: radiation; gamma rays)... it just means the flying saucers with little green men landing on earth are probably out.

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#299
post #225

The Voyager project is an amazing feat for humanity. But I wonder, does NASA take into account the repercussions of sending a probe deep into space? I know space is big but I can only think of the dark forest hypothesis. What's the plan for further space exploration?

Voyager 1 is currently 2.4e10 km from Earth. Trisolaris - sorry, I mean Proxima Centauri - is 4e13 km away [2], so in the (almost) 47 years since its launch, Voyager 1 has covered a whopping 0.06% of the distance. And it's not even headed that way. Meanwhile, radio, TV and radar have been advertising the presence of a new technological civilization on Earth for more than a century. That means any entity worth worryin…

To scale it up, if you're an intergalactic entity, all you'd have to do is make a note of objects pulsing/resonating where they were not before.

"Oh, looks like Earth just got radio waves, which means there's probably life there."

From there you just monitor the wave Hertz output by the planet, and when they start transmitting waves at higher Hz, you know it might be time to meet up.

"Oh they're sending photonic gamma rays as messages now instead of radio waves, I'm gonna go say Hi."

Re: NASA's Voyager 1 Resumes Sending Engineering Updates to Earth

#300

Earlier quoted context omitted.

I’ve imagined a scene playing out, in sci-fi or for real in the distant future, where astronauts test out a new propulsion system by flying out towards Voyager 1 and catch up to it with ease. As they approach, they see the ancient probe grow larger and larger in their window until…

If my math is correct, we would already need to build a spaceship that can travel at 1/10th the speed of light to reach Voyager 1 within one week. It will be quite an engineering challenge for the future.

https://science.nasa.gov/mission/voyager/where-are-they-now/ says the furthest is 24.4 million km from earth. Pulling out the trusty qalculator:

    $ qalc '24.4e6 km / 1 week / c to %'
    (((24.4 * (10^6)) kilometers) / (1 week)) / SpeedOfLight = approx. 0.0134572816%
So this is using the "millions of kilometers per week" as a speed unit (like km/h but bigger), then dividing by the speed of light (c) to get the fraction of c this is, and finally asks it to format it as a percentage

Edit: found a potentially easier (more intuitive to understand) query, giving the same result, as well as how to ask it nearly for the how manyth part of c this is. I'm still learning all the tricks of this tool :)

    $ qalc '24.4e6 km / 1 week to c%'
    [...] approx. 0.0134572816(%c)
    $ qalc '24.4e6 km / 1 week to 1/c'
    [...] approx. 7430.92125 c^-1
Post reply on HN